Trusted Sources

Google Knowledge Graph: Entity isReference Domains

Dataset: 62,202 isReference domains | entities

Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.

The Google leak in May 2024 confirmed that Google explicitly associates people with their profile pages (isReference) and articles they have written (isAuthor).

⚠️ You Can't Use Just ANY Domain!

Out of 1,738,093 domains we monitor, only 62,202 qualify as isReference domains.

3.65%

Only 3.65% of domains earn isReference status from Google. Domain selection is critical.

Key concepts:

Wikipedia is NOT Required (or even your best bet)

Wikipedia: 6 million entities
Kalicube Pro: 71 million entities
Knowledge Graph: 50 billion entities

0.012%

Wikipedia covers only 0.012% of the Knowledge Graph. If your entity isn't in that 0.012%, you need to build a Knowledge Panel with ~30 isReference url instead.

📊 Kalicube's Entity Validation Dataset

1,738,093
Domains Checked Regularly
62,202
isReference Domains
3.58% qualify
23,295,240
URLs Monitored
73,669,143
Entities Tracked

💡 Even Small Niche Domains Have isReference Authority

Examples from our dataset (December 2025):

kalicube.com 21 entities
searchengineland.com 11 entities
jasonbarnard.com 86 entities
searchenginejournal.com 270 entities
entrepreneur.com 1,292 entities
forbes.com 2,823 entities

Your niche-specific domains may have similar authority in your category.

Top 100 isReference Domains for All Entity Types

Rank Domain Entity Count
1 wikipedia.org 2,626,262
2 linkedin.com 356,172
3 twitter.com 333,703
4 amazon.com 140,368
5 instagram.com 135,696
6 x.com 108,782
7 facebook.com 106,158
8 allocine.fr 102,378
9 deezer.com 56,460
10 youtube.com 42,248
11 namu.wiki 41,506
12 google.com 38,130
13 legacy.com 28,602
14 wiktionary.org 26,035
15 isfdb.org 24,121
16 britannica.com 22,836
17 reddit.com 19,710
18 yahoo.com 18,816
19 trustpilot.com 18,624
20 gutenberg.org 16,359
21 dictionary.com 15,964
22 fandom.com 14,230
23 crunchbase.com 11,342
24 tiktok.com 10,825
25 microsoft.com 10,756
26 rottentomatoes.com 9,397
27 metacritic.com 9,187
28 letterboxd.com 8,286
29 uk.com 8,101
30 espn.com 7,812
31 justwatch.com 7,664
32 apple.com 6,893
33 github.com 6,485
34 wikiwand.com 6,236
35 wikiquote.org 6,140
36 history.com 6,093
37 quora.com 5,961
38 indeed.com 5,776
39 fifa.com 5,612
40 webuy.com 5,580
41 spotify.com 5,367
42 shopee.co.id 5,325
43 wikia.com 5,249
44 netflix.com 5,209
45 bbc.co.uk 5,037
46 reuters.com 4,719
47 pinterest.com 4,559
48 plus.lefigaro.fr 4,526
49 premiere.fr 4,494
50 imdb.com 4,476
51 hotels.com 4,473
52 billboard.com 4,474
53 cambridge.org 4,438
54 forbes.com 4,414
55 mit.edu 4,342
56 vocabulary.com 4,290
57 vikidia.org 4,250
58 shopee.ph 4,216
59 bloomberg.com 4,181
60 theguardian.com 3,976
61 bbc.com 3,967
62 thesaurus.com 3,835
63 ign.com 3,821
64 nhl.com 3,783
65 linkedin.cn 3,737
66 google.com.br 3,724
67 soundcloud.com 3,705
68 famousbirthdays.com 3,707
69 pornhub.com 3,499
70 playstation.com 3,408
71 ca.gov 3,346
72 dell.com 3,318
73 nih.gov 3,256
74 hbomax.com 3,209
75 genius.com 3,012
76 house.gov 3,004
77 go.com 2,955
78 time.is 2,958
79 independent.co.uk 2,956
80 itv.com 2,940
81 bing.com 2,779
82 search.google 2,628
83 meta.com 2,625
84 radiofrance.fr 2,598
85 nasa.gov 2,588
86 a-artist.com 2,539
87 discovery.ca 2,526
88 inc.com 2,513
89 twitch.tv 2,510
90 france24.com 2,464
91 bio-on.it 2,429
92 rateyourmusic.com 2,396
93 nps.gov 2,384
94 kpmg.com 2,382
95 last.fm 2,354
96 chess.com 2,316
97 nintendo.com 2,302
98 coach.com 2,274
99 nytimes.com 2,276
100 washington.edu 2,272
101+ 62,102 additional niche-specific domains in full dataset covering 69,028,527 additional entities

Why This Data Matters

Google validates entity information through patterns of corroborating mentions across trusted domains. This list shows where Google recognizes all entity types - but here's the catch: entity authority is extremely niche-specific.

Entity Validation at Scale

Google's Knowledge Graph requires consistent entity recognition across validated domains.

  • Only 3.65% of domains (62202 out of 1738093) qualify as isReference
  • Brands typically need ~30 entity-validated url for a stable Knowledge Panel
  • Each niche has unique entity authority patterns
  • Generic "authority lists" miss 95%+ of niche-specific opportunities

⚠️ This Free List is Intentionally Limited

The top 100 domains shown above are dominated by massive generalist sites. For 99% of brands, the real opportunities lie in the niche-specific domains that only appear in our full platform dataset.

Recommended Reading:

🔐 Find YOUR Niche-Specific isReference Domains

We monitor 23M+ URLs across 1.7M domains to identify the exclusive 3.65% that qualify as isReference domains for 72M+ entities. The Kalicube Pro platform maps your competitive landscape and identifies your niche-specific opportunities in 15 minutes.

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